3 ms·
But you can't have as many bits in a UID date as for a generic cookie, and a privacy protecting client could just ignore the ones that don't make sense. Does a
by chipsa 4y ago
But you can't have as many bits in a UID date as for a generic cookie, and a privacy protecting client could just ignore the ones that don't make sense. Does a 1978 date make sense? Probably not. You could scale this up to the millions, probably, but it won't scale infinitely.
- genewitch 4y agoroblox has ~50mm daily users (DAU), and if my math is correct (it probably isn't) you could have hour granularity (only 0-23) timestamps on 6 files, each day, and track 191mm unique users. I used roblox because i knew their DAU off-the-cuff - because roblox requires a login, they know who you are anyhow. But if you do 1 second granularity a mere 2 cache timestamps are enough to fingerprint everyone on the planet, each day. is my math wrong, here?